Comparison between first and second/third wave of sars-cov-2 moderate to severe infection in elderly patients in an north italian hospital setting

Older patients admitted to hospital since the beginning of the pandemic showed diverse clinical severity profile according to different waves; patient admitted during the first wave had worse respiratory, radiological and laboratory parameters than those admitted in the second/third wave; further difference was found in COVID-19 treatment during hospital stay as steroids were largely administered during the latter waves.